Gas cooking appliance



FIG. 1 is a perspective view of a gas cooking appliance showing my ornamental design;

FIG. 2 is a front elevation view of the gas cooking appliance embodiment shown in FIG. 1;

FIG. 3 is a right side elevation view of the gas cooking appliance embodiment shown in FIG. 1; and,

FIG. 4 is a top plan view of the gas cooking appliance embodiment shown in FIG. 1. 

The ornamental design for a gas cooking appliance, as shown and described. 